When do you use the past participle?

The past participle is used with the verb have (have / has / had) to create the present and past perfect tenses. The past participle form is also used to modify nouns and pronouns. One example is the phrase sliced bread. The past participle is usually the same as the past tense form.

b.science

explanation:

hm, switch the relative; nominative and indefinite; objective ? not too bright in the knowledge of the english.